Floor-brick for downdraft-kilns.



- PATENTED APR. 17, 1906. R. SOUTHWORTH 8; J. E. HOLDEN. FLOOR BRIOK FOR DOWNDRA'FT KILNS.

APPLICATION FILED D30. 8. 1905.

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FLOOR-BRICK FOR DOWN DRAFT-KIILNSB Specification of Letters Patent.

Patented April 17, 1906.

Application filed December 8,1905. Serial No. 290.959.

To all whom it may concern:

Be it known that we, RrcHARD SOUTH- WORTH and JOSEPH EDWARD HOLDEN, of the village of Mimico, in the county of York, in the Province of Ontario, Canada, have invented certain new and useful Improvements in Floor-Bricks for Downdraft-Kilns, of which the following is a specification.

Our invention relates to improvements in floor-bricks for downdraft-kilns; and the object of the invention is to devise a brick which may be easily pressed or molded and which when a number are used to cover the bottom of the kiln may be readily fitted to gether and when fitted together will remain securely in place and yet allow of a free downdraft therethrough; and it consists, essen tially, of a floor-brick having one plain side, two plain ends, and the other side provided the ends of which are inclined and the bottom of the brick being arranged at one side to extend beneath the main body thereof and the bricks being fitted together, as hereinafter more particularly explained.

Figure 1 is a perspective view'showing portion of the bottom of a kiln constructed with bricks made in accordance with our inven tion. Fig. 2 is a plan view. Fig. 3 is a de tail of the brick.

In the drawings like letters of reference indicate corresponding parts in each figure.

A is the brick, which has one plain vertical side A and two plain vertical ends A A The opposite side to A is provided with a recess A having the inclined ends A A. The side A of the recess is vertical. The brick is provided with a depending portion A, extend- 'ing down below the main body thereof.

In Fig. 1 it will be seen that the bricks are placed together so that the projections A formed at the one side abut the plain sides, as indicated.

, The bricks are placed upon the floor across the beams B, and the projecting downwardlyextending portions A extend between the beams and serve to hold the bricks in place and from longitudinal displacement. The bricks are all placed with their joints in alinement substantially over the center of the beams B.

Such a form of brick as we describe can be readily placed in position, be easily repaired, as one or more can be taken out and replaced when burned out or destroyed, and at the same time allows of a maximum draft through the body of the kiln, which is an important desideratum.

What we claim as our invention is 1. A floor-brick for kilns having one plain vertical side and plain vertical ends and one recessedside forming end projections, and a depending portion of the length of the bottom of the recess extending beneath the body portion said end projections having upwardly and outwardly inclined opposing faces as and for the purpose specified.

2. The combination with the beams, of a plurality of bricks having one of the sides plain and the other side recessed, so as to provide projecting ends, which are designed to fit against the plain side of the adjacent brick, and all the bricks being arranged, so that the ends abut each other and the joints over the beam are alined, and the depending portions extend between the beams said proj ecting ends having upwardly and outwardly inclined opposing faces so that the space formed between two bricks is smaller at the bottom than at the top as and for the pur pose specified.

Witnesses B. BY E. McEAoi-inniv. 

